Permit history for unincorporated County of Sonoma
PermitProof searches unincorporated County of Sonoma’s permit records automatically: enter an address, and the search is queued and run against the jurisdiction’s official source, returning what it was able to read there with a link back to that source beside each record. Incorporated cities in the county are listed below with their own pages; where a city contracts building and safety to the county, its records are served through this same source.
Its connector passed a live acceptance test against the official source on Aug 4, 2026: a positive test against an address with a known permit history, and a negative test in which the portal correctly returned an explicit no-record result for a synthetic in-jurisdiction address. Automated coverage is a statement about the connector, not a guarantee that a portal publishes every permit ever issued.
The ledger behind these markers records passing acceptance tests dated between Jul 23, 2026 and Sep 2, 2026. A stored result of an identical search may be reused for up to 30 days, and a read that could not finish is labeled incomplete - never presented as a completed permit history, and never as "no permits found". Full reuse windows and how sources are chosen.
Where a search cannot establish something, the report says so in that row - it never fills a field in, and it never reports “no permits found” without certified evidence.
What the catalog records about this source
The catalog records the official source as the Permit Sonoma Accela Citizen Access portal. When the source was researched, the county also published a separate Construction Permits open-data dataset at data.sonomacounty.ca.gov and a separate parcel-search tool at parcelsearch.permitsonoma.org, which was not inspected. The City of Sonoma is a separate authority with its own page.
What the acceptance test read
From the ledger entry behind the automated marker above, for this jurisdiction alone:
- Portal software recorded in the catalog
- Accela Citizen Access
- Positive test
- The completed read returned 53 permit records for the test address - a count for one address on one day, not a measure of what the portal holds.
- Negative test
- The synthetic address submitted was 99999 London Ranch Rd, Glen Ellen, CA 95442. The portal returned an explicit no-record result for it; the address is recorded here so that result can be checked against the official source rather than taken from this page.
Related guides
Other Sonoma County jurisdictions PermitProof searches
- Healdsburg Automated
- Petaluma Automated
- Rohnert Park Automated
- Sebastopol Automated
- Windsor Automated
All 10 Sonoma County permitting authorities, including the 4 listed only on the county page